All Questions
31
questions
4
votes
3
answers
411
views
7
votes
2
answers
363
views
Measurement error propagation onto fitting-parameters
I have a dataset consisting of (t,y) Tuples, where each y has a known measurement error (standard deviation). I would like to fit a trapaze-function into the data and obtain the fitting paramaters and ...
- 73
3
votes
1
answer
206
views
How can one find the corresponding black body temperature, when trying to fit the integrated planck function (energy flux) to a value
Given a certain numerical value for the energy density flux $F$ of a star, e.g. the solar constant $s_\odot = 1362~\frac{W}{m^2}$, and a certain wavelength range corresponding to the irradiated energy ...
- 141
1
vote
1
answer
154
views
Fitting a sum of three lorentzian based on a dataset
as you can see below, I have developed a code that allows me to fit the present dataset via a Lorentzian. Now what I should do is to develop a sum of three Lorentzians based on this model so that this ...
1
vote
1
answer
137
views
2
votes
2
answers
240
views
Can the CopulaDistributions be fitted?
This is an immediate follow-up to DoAny--which I did consider editing, clarifying and correcting in some respects.
But perhaps here I can put the immediate question at hand more directly (the emphasis ...
- 2,335
1
vote
3
answers
317
views
Do any of the Mathematica CopulaDistributions (or others) fit well this sampled bivariate copula with uniform marginals over [0,1]?
I'm currently developing a data set that consists of two $50 \times 50$ matrices, which I designate as q1 and Q1. I strongly believe (bordering on formal proof [cf. Corollary 1 in marginalinvariance]) ...
- 2,335
2
votes
2
answers
257
views
Graph of points with unknown function - How to curve fit it?
So I'm in my physics lab trying to graph these points:
...
- 21
5
votes
1
answer
208
views
A little complex data fitting in physics which my easy code can't solve properly
This is a data fitting in physics, however, some errors may estimate and cause failure.
First, I define:
...
- 105
0
votes
1
answer
559
views
Fitting 3D data with a nonlinear model
I am trying to fit a model to an intensity map to extract three values for the parameters of my model $J_x, J_y, J_z$. Currently, I am running into the issue where I can extract values for these three ...
1
vote
2
answers
119
views
1
vote
2
answers
214
views
3
votes
1
answer
156
views
Problem with fitting a given data with an equation
I want to fit a given data using the approach developed by @Bob Hanlon here: Fit and find fitting parameters of data given an equation
I have tried this approach for several different data sets but I ...
- 1,651
0
votes
1
answer
122
views
4
votes
4
answers
287
views
Fitting for constants
I have this differential equation: $$m\ddot x=-kx^\frac{3}{2}-c\dot x-mg$$ where I want to fit for $k$, $c$. ($g$ is 9.81 and $m$ is 0.3).
This is a model for collision, hence in the data that we have ...
- 663